Chemistry · Organic Chemistry

Which one of the following has the lowest pKa value?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1HCOOH
2Cl – CH2 – COOH
3O2N – CH2 – COOH✓
4CH3 – COOH

Correct answer

O2N – CH2 – COOH

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